Mammalia - Perissodactyla - Palaeotheriidae

Alternative combinations: Eohippus vasacciensis, Lophiotherium vasacciense, Notharctus vasacciensis, Orohippus vasacciensis, Orotherium vasacciense

Synonyms: Eohippus cristonensis Cope 1877, Eohippus validus Marsh 1876, Heptodon singularis Cope 1875, Hyrachyus singularis Cope 1875, Hyracotherium cristonense Cope 1877, Hyracotherium singularis Cope 1875, Orotherium cristonense Cope 1877, Pachynolophus singularis Cope 1875, Pliolophus cristonensis Cope 1877

Belongs to Hyracotherium according to Robinson 1966

Sister taxa: Hyracotherium cristatum, Hyracotherium major, Hyracotherium montanum, Hyracotherium pernix, Hyracotherium seekinsi

Ecology: ground dwelling frugivore-folivore

Average measurements (in mm): m1 7.00 x 5.20